지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국우주과학회 Journal of Astronomy and Space Sciences Journal of Astronomy and Space Sciences 제34권 제2호
- 발행연도
- 2017.6
- 수록면
- 111 - 118 (8page)
- DOI
- https://doi.org/10.5140/JASS.2017.34.2.111
이용수
초록· 키워드
오류제보하기
A ultra low frequency (ULF) wave, Pi2, has been reported to occur during periods of extremely quiet magnetospheric and solar wind conditions. And no statistical study on the Pi2 has been performed during extremely quiet conditions, using satellite observations to the author’s knowledge. Also Pi2 pulsations in the space fluxgate magnetometers near perigee failed to attract scientist’s attention previously. In this paper, Pi2 pulsations detected by the Van Allen probe satellites (VAP-A & VAP-B) were investigated statistically. During the period from October 2012 to December 2014, ninety six Pi2 events were identified using VAP when Kp = 0 while using Kakioka (KAK, L = 1.23) as a reference ground station. Seventy five events had high coherence between VAP-Bz and H components at KAK station. As a result, it was found that 77 % of the events had power spectra between 5 and 12 mHz, which differs from the regular Pi2 band range of from 6.7 to 25 mHz. In addition, it was shown that it is possible to observe Pi2 pulsations from space fluxgate magnetometers near perigee. Twenty two clean Pi2 pulsations were found where L < 4 and four examples of Pi2 oscillations at different L shells are presented in this paper.
목차
등록된 정보가 없습니다.
참고문헌 (29)
참고문헌 신청
W. Allan / 1986 / Impulse-excited hydromagnetic cavity and field-line resonances in the magnetosphere / Planetary and Space Science 34(4):371~385
C. W. Arthur / 1977 / Micropulsations in the morning sector, 3. Simultaneous ground-satellite observations of 10- to 45-s period waves near L = 6.6 / Journal of Geophysical Research 82(19):2859~2866
C. R. Chappell / 1970 / A study of the influence of magnetic activity on the location of the plasmapause as measured by OGO 5 / Journal of Geophysical Research 75(1):50~56
C. Robert Clauer / 1974 / Mapping the local time-universal time development of magnetospheric substorms using mid-latitude magnetic observations / Journal of Geophysical Research 79(19):2811~2820
Shigeru Fujita / 1995 / Magnetospheric Cavity Resonance Oscillations with Energy Flow across the Magnetopause. / Journal of geomagnetism and geoelectricity 47(12):1277~1292
C. W. Arthur / 1977 / Micropulsations in the morning sector, 3. Simultaneous ground-satellite observations of 10- to 45-s period waves near L = 6.6 / Journal of Geophysical Research 82(19):2859~2866
C. R. Chappell / 1970 / A study of the influence of magnetic activity on the location of the plasmapause as measured by OGO 5 / Journal of Geophysical Research 75(1):50~56
C. Robert Clauer / 1974 / Mapping the local time-universal time development of magnetospheric substorms using mid-latitude magnetic observations / Journal of Geophysical Research 79(19):2811~2820
Shigeru Fujita / 1995 / Magnetospheric Cavity Resonance Oscillations with Energy Flow across the Magnetopause. / Journal of geomagnetism and geoelectricity 47(12):1277~1292
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